Version 3.0

On June 17, 2010, WordPress Version 3.0, named for Thelonious, was released to the public. For more information on this enhancement and bug-fix release, read the WordPress Blog and see the Changelog for 3.0.

For Version 3.0, the database version (db_version in wp_options) changed to 15260, and the Trac revision was 15274.

Add compatibility code for old themes that relied on templates from the default theme without expressly identifying it as the parent theme (Note: the fallback to these template files is now deprecated and will be removed in a future version)

Deprecate VHOST in favor of a boolean, SUBDOMAIN_INSTALL (Note: core will keep VHOST defined for plugins' sake, but you should only define SUBDOMAIN_INSTALL; will throw notice if VHOST is defined, and a warning if they somehow conflict; sunrise can still handle them

Deprecate is_term and is_taxonomy in favor of term_exists and taxonomy_exists

Don't check for the existence of index.php in the htaccess rewrite rules